Nozzle for oil or other liquid



Dec.4 l, 1936. w A HUBBARD 2,062,362

NOZZLE FOR OIL OR OTHER LIQUID Filed April 2l, 1954 /J v mi jaar/My Patented Dec. 1 1936 UNITED STATES PATENT OFFICE 2,062,362 NOZZLE FOR OIL 0R OTHER LIQUID William A. Hubbard, Minneapolis, Minn. Application April 21, 1934, Serial No. 721,749 15 Claims. (Cl. 299-120) This invention relates to a nozzle and while the nozzle may have various applications and .be used for various liquids, it particularly is designed for use with an oil burner. Such nozzles are now used in large numbers and have the oil forced therethrough under pressure. It is desirable in such a nozzle to have one which can be easily and quickly removed for cleaning or replacement. Itis also desirable to have a nozzle containing a screen for straining the oil, which screen should be rmly mounted by a simple structure and `be also easily and quickly removable. It is also quite desirable to have parts of the nozzle easily removable from the outer end of the nozzle.

It is an object of this invention to provide a nozzle structure having a member forming the head or outer end of the nozzle adapted to be secured in or threaded into a nozzle shell, which member` carries all of the nozzle parts including a screen whereby the same can be easily and quickly removed.

It is a further object of the invention to provide a nozzle comprising an outer member adapted to be threaded into a shell at one end, having its other end forming the outer end of the nozzle and preferably tapering to its outer end, said member having a discharge disk seated therein, a. second member threaded into the inner end of said member holding said disk in place and having a bore therein in which a screen is disposed, a headed member being provided to extend through and engage said screen and hold it in place in said second member.

It is still another object of the invention to provide a novel mounting for a nozzle screen comprising a member having a bore therein with a shoulder at one end against which one end of the screen seats and a headed member extending through said screen threaded into said rst mentioned member at one end and engaging said screen with its headed portion to hold the same against said first mentioned member.

It is a further object of the invention to provide a structure as set forth in the preceding paragraph in which said headed member has an annular groove in its head in which one end of said screen is received, said rst mentioned member preferably having its bore tapering at one end to center the other end of said screen.

'Ihese and other objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying drawing, in which like reference characters refer to similar parts throughout the several views and in whichzquite small central discharge aperture I2a of cy- Fig. 1 is a central longitudinal section through the nozzle;

Fig. 2 is a transverse section on Fig. 1 as indicated by the arrows;

lig. 3 is a face view of a discharge disk used; 5 an Fig. 4 is a transverse section of said disk taken n line 4 4 of Fig. 3 as indicated by the arrows. Referring to the drawing, a nozzle is shown comprising a shell I0. While said shell may take 10 various shapes, in the embodiment of the invention illustrated, it is shown as having a cylindrical outer portion Illa interiorly threaded as shown at Illb. Said nozzle has an outer portion I 0c preferably of hexagonal or other angular 15 shape and also bored and internally threaded as shown at Illd. The shell I0 is adapted to be screwed onto a liquid supplying or oil supplying pipe. The nozzle also comprises a member II having a reduced and externally threaded inner portion Ila adapted to be threaded into the outline 2 2 of er end of shell I0. Said member II has a shoulder portion IIb engaging the end of shell I0. Member II has the portion adjacent the end of the shell I0 preferably made of hexagonal or 25 other shape and the same has an end portion I Ic of substantially cylindrical shape, thesame converging toward the outer end of the nozzle. Said latter portion has an opening IId extending axially therethrough, the walls of said opening being formed on a reentrant curved surface IIe continuous with the outer surface of portion I Ic. Member II is provided with a longitudinal centrai bore and is formed adjacent the opening lId with an angular shoulder I If. A discharge disk I2 of dat cylindrical form has one corner beveled so that said'disk -ts the bore of member across opening IId.

against shoulder IIf and in II, said disk thus extending Said disk is provided with a 4 lindrical form and also has a frusto-conical poro tion I2b extending nfrom the inner end of the cylindrical passage I2a to the inner side of the disk, passage I2b flaring inwardly. Said disk has an annular groove I 2c at its inner side of semi-cir- 45 cular form in radial cross section and a pair of small grooves I2d lead from the groove I2c inwardly to passage I 2b and are disposed tangentially to said passage at opposite sides thereof. Member II is interiorly threaded at lIg and a member I3 is exteriorly threaded and screwed into member I I. Member I 3 has a ilat surface at its inner end which engages the inner side of disk I2,` and holds the same against shoulder IIf, member I3 being screwed tight against said 55 disk. Member I3 has a portion Ila of its periphery at its inner end formed of hexagonal or other angular shape so that it can be readily turned. The portion I3b between portion I3a. and the exteriorly threaded portion is preferably cylindrical. Member I3a is provided with a central bore I3c which has a reduced interiorly threaded portion I3d, said bore being somewhat enlarged at the outer side of the portion I3d to form the chamber I3e. A shoulder |31* is formed adjacent the reduced threaded portion I3d and the wall of bore I3c converges toward this shoulder at the inner end of said bore as shown at Ila. A plurality of holes I3h are formed in the outer end of member I3, the same being shown as two in number, said holes alining at their outer end with the groove I2c. A screen Il is provided and while the screen might have various shapes, in the embodiment of the invention illustrated, it is shown as cylindrical in form. The outer end of screen I4 seats against shoulder I3f, the exterior diameter of said screen being substantially the same as the reduced portion of the inner end of bore I3c. A member I5 is provided having an enlarged portion or head I5a provided at its outer side with an annular groove I5b in which the inner end of screen. is disposed. Member I5 has a threaded shank portion I5c extending through the screen I4 and threaded into portion I3d. Member I5 thus holds the screen I4 firmly against the shoulder I3f and said screen is thus positioned axially of members II and I3. Member I5 is screwed into member I3 until screen Il is firmly engaged. Member I5 has a pair of grooves I5d extending longitudinally thereof at opposite sides substantially throughout the length of its threaded shank portion I5c. Member I5 has a tapered frusto-conical portion at its end in the surface of which grooves I5d terminate.

In operation, as stated, the member I0 will be secured to an oil supplying pipe or conduit and connected thereto by the threads Id. The oil or other liquid passes into the shell I0, then passes through screen I4 from the outer side to the interior thereof and enters the grooves I5d. The oil or other liquid then flows into chamber I3e, through holes I3h to the groove I2c, through grooves I2 to the discharge passages I2b and I2a and is discharged in the form of an outwardly diverging cone from passage I2a. It will be seen that if it is desired to dismantle the nozzle for any purpose the member I I can be unscrewed from the shell I Il. This can readily be done without disconnecting the shell I0 from its supply pipe. When member Il is thus removed it carries with it the parts I2, I3, I4 and I5. If the' screen is to be removed this can be easily done by removing member I5. 'Ihe screen can thus be removed for cleaning or replacement very easily and quickly. If it is necessary to remove the disk I2 this can readily be done by unscrewing and removing member I3. It will also be apparent that the whole nozzle assemblyV including parts II to I5 can be assembled and in operative condition before the same are placed in the shell Ill. Said parts thus constitute a unitary structure. In practice these parts, which, as stated, are carried by the member II, are made as a separate unit or article of manufacture and are sold in this form to be connected to various shells I 0.

From the above description it is seen that applicant has provided a very simple and emcient form of nozzle and one that can be very readily assembled and dismantled. The parts are all accessible when the member II is removed from the outer end of the nozzle. The parts are all simple and of rugged construction and comparatively few in number. The nozzle has been amply demonstrated in actual practice, has been found to be very successful and emcient and is being commercially made.

It will, yof course, be understood that various changes may be made inthe form, details. ar.- rangement and proportions of the parts. without departing from the scope of applicants invention, which generally stated, consists in a device capable of carrying out the objects aboveset forth in the parts and combinations of parts disclosed and defined in the appended claims.

What is claimed iszl. An oil burner construction comprising a plug adapted to be threaded into a nozzle head and having a central bore extending from one end thereinto and having a reduced threaded portion at the inner end of said bore, a cylindrical screen disposed in said bore and spaced from the wall thereof having one end seated in said plug and a member extending through said screen having one end threaded into said last mentioned portion and having an enlarged portion engaging the other end of said screen for holding said screen in place.

2. The structure set forth in claim l, said member having an annular groove inv said enlarged portion into which the end of said screen I projects.

therethrough and having an externally threaded portion at one end adapted to be screwed into a nozzle shell, the other end of said member forming the outer end of said nozzle, said member having a shoulder therein a short distance from its other end, a discharge disk tting against said shoulder and having a small central discharge aperture therethrough, a second member threaded into said bore having its end engaging said disk to hold the same against said shoulder, said second member having a bore there. through, a cylindrical screen disposed in said bore and spaced from the walls thereof, a member engaging one end of said screen and threaded into said second member to hold said screen in place, said latter member having passages therethrough through which liquid passing through said screen may pass to one end of said first mentioned bore and said first mentioned member having means for the passage of liquid to said discharge disk.

5. A nozzle construction comprising a member externally threaded at one end so as to be screwed into one end of a nozzle shelland having, its other end forming the outer end of said nozzle, a second member extending into said first mentioned end of said rst mentioned member threaded thereinto and having a central :longi-kv tudinal bore, a cylindrical screen, and extending longitudinally within said screen and having a threaded portion secured to said second mentioned member for holding said screen in place, whereby all of said parts are `carried by said iirst mentioned member.

6. A nozzle construction comprising a member arranged to have one end screwed into a nozzle u shell and having its other end forming the outer end ot said nozzle. said member having a bore extending therethrough, an apertured discharge means in said member adjacent its outer end,

a second member threaded into said iirst mentioned member from said rst mentioned end, a screen engaging said second member, and means secured to said second member and threaded thereto from its inner end engaging said screen for holding said screen in place against said second member whereby said iirst mentioned member may be screwed out of said shell and carry therewith said second member, screen and means.

7. A nozzle structure comprising a hollow openended member adapted to be secured in a nozzle shell at one end and having its other end forming the discharge end of said nozzle, a discharge disk extending across the vopening at said discharge end, a second member threaded into said member from said first mentioned end holding said disk in place,`said second member having a longitudinal bore, a screen and a third member threaded to be secured to said second member and holding said screen in place with one end abutting said second member whereby said first mentioned memberV carries all of said parts and may be screwed into and out of said nozzle shell to give access to said parts.

8. A nozzle structure comprising a hollow openended member adapted to be screwed into a nozzle shell at one end and having its other endl forming the discharge end of said nozzle, a discharge disk extending across they opening at said discharge end, a second member threaded into said member from said first mentioned end, said second member having a longitudinal bore, a screen through which oil passes to said bore and a third member threadedly connected to said second member and engaging the inner end of said screen for holding said screen in place whereby all of said parts are carried by said first mentioned member.

9. A nozzle structure comprising a hollow openended member adapted to be screwed into a nozzle shell at one end and having its other end forming the discharge end of said nozzle, a discharge means extending across the opening at said discharge end, a second member threaded into said member from said rst mentioned end,

said second member having a longitudinal bore, a screen through which oil passes to said bore and a member secured to said second member and engaging the end of said screen remote from said discharge end for holding the same in place.

410. An oil burner structure comprising a hollow open-ended member adapted to be secured in a nozzle shell at one end, having its other end forming the discharge end of the nozzle, a discharge disk extending across the opening at said discharge end, a second member threaded into said member from said nrst mentioned end holding said disk in place, a cylindrical screen. and means secured to said second member for holding said screen in place including a member extending lengthwise of said screen within the same and engaging one end of said screen.

11. A nozzle construction having in combination, a nozzle shell having a bore extending therethrough and internally threaded at one end, a member externally threaded so as to be screwed into said end of said shell and having its other end forming the outer end oi said nozzle, said member having a bore therein, a cylindrical screen disposed in said latter bore and spaced from the walls thereof having one end seated in said member and a second member extending through said screen havingv one end threaded into said rst mentioned member and having an enlarged portion engaging the other end of said screen for holding said screen in place.

12. A nozzle structure comprising a hollow open-ended member adapted to be screwed into a nozzle shell at one end and having its other end forming the discharge end of said nozzle, a second member threaded into said member from said irst mentioned end, said ,second member having a longitudinal bore, a screen through which oil passes to said bore and means extending through said screen and threaded to said second member and engaging the end of said screen remote from said discharge end to hold the same in place so that said screen may be released and removed upon removal of said last mentioned means.

13. A nozzle `structure comprising a hollow said second member.

14. A nozzle having a shell and comprising a member disposed in said shell, said member having an opening extending longitudinally thereof,

a cylindrical screen having one end engaging said member, a second member secured in said iirst mentioned member extending through said screen and having means engaging the other end there\ oi to hold said screen in place.

15. A nozzle having a shell and comprising a place against said second member' member carried concentrically thereon, said member having an opening extending longitudinally thereof for the passage of liquid, a cylindrical screen having one end abutting said member and a second member extending longitudinally through said screen engaging one end thereof to hold the same in place and centrally threaded into said first mentioned member.

WILLIAM A. HUBBARD. 

